Structure to be used in printing machines and the like for laterally adjusting sheets



Aug. 25, 1970 J. JIRUSE 3,525,519

STRUCTURE TO BE USED IN PRINTING MACHINES AND THE LIKE FOR LATERALLYADJUSTING SHEETS Filed Sept. 27, 1968 5 Sheets-Sheet l INVENTOR Bras/m)"7/7052 I Q f Aug. 25; 1970 JlRUSE 3,525,519

STRUCTURE TO BE USED IN PRINTING MACHINES AND THE LIKE FOR LATERALLYADJUSTING SHEETS Filed Sept. 27, 1968 3 Sheets-Sheet 2 FMPiT k a; 66 O 6a m m w n. M

0 m L arm 1 5 2/\ r! n 0 6 R W fi T a a m: a m f Aug. 25, 1970 J. JIRUSE3,525,519

STRUCTURE TO BE USED IN PRINTING MACHINES AND THE LIKE FOR LATERALLYADJUSTING SHEETS Filed Sept. 27, 1968 3 Sheets-Sheet 5 1 i /0 I i r. 66L1 2 3/ 1 C 42 l i "l n 29 N 33 a5 26 INVENTOR farm /a u l fn/je Int.Cl. B65h 9/10 US. Cl. 271-59 10 Claims ABSTRACT OF THE DISCLOSURE In adevice for laterally adjusting sheets in a machine, such as a printingpress, an elongated support shaft of the machine is supported forswinging movement about its axis. This shaft carries a lifting forkwhich coacts with a swingable body which is freely swingable on asupport shaft and which is urged downwardly by a spring between thelifting fork and the swingable body. This latter body carries a rollerwhich is resiliently pressed by this spring against the upper surface ofa sheet-conveying table, and flush with this table is a shifting bar toengage a sheet and shift the latter into engagement with a stop memberwhich is carried by the swingable body. A pressure roller which iscarried by the swingable body coacts with the upper surface of theshifting bar to press against a sheet which is displaced into engagementwith the stop member upon longitudinal shifting of the shifting bar. Asingle drive shaft of the machine coacts on the one hand with theshifting bar, through a suitable shifting means, for axially shiftingthe shifting bar and on the other hand with the swingable support shaftfor angularly turning the latter.

BACKGROUND OF THE INVENTION The present invention relates tosheet-handling machines, such as printing machines.

In particular, the invention relates to structures for laterallyadjusting sheets.

In the case of printing machines, paper sheets or the like are fedduring the printing operations so as to advance one behind the oher, orthe sheets may partly overlap each other as they are fed along asuitable conveying table. With such constructions it is necessary toprovide an adjusting device which determines the precision with whichthe printing elements register with printing on the sheets, especiallyin those cases where each sheet must pass repeatedly through theprinting press. In order to adjust the sheets laterally they areconventionally displaced into engagement with a fixed stop so that inthis way each sheet .will assume its proper position when next passingthrough the machine.

Known devices for laterally adjusting sheets in this manner are providedwith fixed lateral stops. For example, a displaceable pad coacts with agripper and pushes the sheets into engagement with the lateral stop. Therespective device is adjusted in such a way as to be adapted to theparticular size of the sheet. A rod or a slide as well as drives for themovement of the pad and for the opening of the gripper are required.

One of the drawbacks of devices of this type is that the lateral stopcannot be lifted, and difiiculties are encountered when the sheets arecut obliquely, which is to say when they are not squarely cut, or whenthe front stops are displaced in such a way that they do not form aprecise right angle with the side stop.

Other devices with movable side stops have, therefore, been provided.After a sheet is laterally adjusted, the side stop is lifted and the endof the sheet, even if it is not precisely square and is, instead,somewhat oblique, can

United States Patent 3,525,519 Patented Aug. 25, 1970 pass freelybeneath the stop. In addition to the drives and guides for displacingthe pad and opening the gripper there must in such a case also be adrive for lifting the side or lateral stop.

Other devices for lateral adjustment of sheets use shiftable barsinstead of shiftable pads. In some cases there are a pair of such barswhich move in opposite directions so as to enable adjustments to be madein either one of a pair of opposed lateral directions. With such aconstruction the grippers are replaced by rollers which are designed topress the sheet against the shiftable bar and thus bring about pushingof the sheet toward a lateral stop.

Structures of the latter type are extremely complex. With all of thestructures mentioned above it is essential to provide individual drivesfor the various components. These drives and the transmissions thereforare situated beneath the conveying table. A pair of drive shafts areprovided and designed in such a manner as to give predeterminedpositions to the mechanisms. All of these structures are complicated anddo not provide the required operations in the best possible mannerwhile, in addition, requiring exceedingly expensive machining.

There are other known devices for bringing about the lateral adjustmentof sheets, using the same principles, but having their drives and theposition of their components determined by a single shaft. In theseconstructions, the lateral stop is tiltable about the center of thedriving shaft and presses against the conveying table when in itsworking position. The path of the pressing roller which engages thesheet extends along a radius about the center of the drive shaft, but inthe critical position when pressing down on the paper sheet the path ofthe roller extends at right angles to the conveying table, this resultbeing brought about by the lateral stop which bears directly against theconveying table and prevents further angular displacement of the entiremechanism of the shaft.

A structure of this latter type simplifies other known structures, butthe .tiltability of the lateral stop is a highly disadvantageous featureinasmuch as the stop sometimes lifts the paper and damages the edgesthereof. Moreover, the lateral stop strikes during operation against thetable at each stroke and damages the table. The quality of the printingoperations are undesirably influenced by these impacts, especially athigh operating speeds.

SUMMARY OF THE INVENTION It is accordingly a primary object of thepresent invention to provide a construction which will avoid the abovereferred to drawbacks.

In particular, it is an object of the invention to provide a relativelysimple reliably operating structure driven from a single drive shaft andcapable of accurately adjusting the individual paper sheets.

Another object of this invention is to provide a lateral stop memberwhich will coact with the conveying table in such a way as to preventeven relatively thin sheets from becoming situated between the lateralstop and the table. On the other hand, it is an object of the inventionto provide a lateral stop which has a dimension sutliciently greatlongitudinally of the sheet to prevent the edge of the sheet from beingdeformed.

Also, it is an object of the invention to provide a structure which willreliably prevent a sheet from being lifted from the conveying table whenthe lateral stop is lifted therefrom. Thus, the edges of the papercannot be undesirably bent at the place where it contacts the stop.

Further, it is an object of the present invention to provide aconstruction which is capable of adjusting the gap between the conveyingtable and a guide situated thereover, in accordance with the thicknessof the paper, so that buckling of the paper, particularly along an edge3 thereof will not occur when the paper engages the lateral stop member.

In accordance with the invention, there is located on a suitable supportshaft which is supported for swinging movement about its axis a liftingfork and a swingable body that is freely swingable on the shaft and islifted and lowered in response to turning of the lifting fork with thesupport shaft. This swingable body carries a roller which pressesresiliently on the conveying table. An elongated shifting bar has anupper surface flush with the upper surface of the conveying table, andby way of a spring-loaded bayonet joint and a carrier fork the shiftingbar engages a pin of a swingable fork so that through a transmissionfrom a single drive shaft it is possible to reciprocate the shiftingbar. The swingable body carries a stripper and is formed with a boreaccom modating a spring which loads a carrier for a pressure roller thatis pressed down against the shifting bar. This roller extends through anopening of a guide member 'which is adjustably carried by the swingablebody. The swingable body also carries the lateral stop on one side bymeans of a pin which also carries the adjustable structure for adjustingthe guide member. The support shaft is urged by a spring into axialengagement with an end of an adjusting screw so that by turning thelatter the axial position of the shaft and the structure carried therebycan be adjusted.

With this construction it is possible. to adjust individual paper sheetsmost accurately. The lateral stop member which is carried by theswingable body has a lower edge portion extending into a groove of theconveyor table so as to prevent even relatively thin sheets frombecoming wedged between the lateral stop member and the conveying table.The lateral stop member is sufficiently wide to prevent any undesirabledeformation of the edge of the paper. When the stop is lifted with theswingable body by the lifting fork on the support shaft, the sheet isprevented, by the stripper which is carried by the swingable body, frombeing lifted along with the stop member, so that the edges of the paperare prevented from becoming bent at the location of contact with thestop member. Inasmuch as the gap between the conveying table and theguide member can be adjusted in accordance with the thickness of thesheet of paper, there can be no buckling of the paper particularly atthe edge thereof When it engages the lateral stop member.

BRIEF DESCRIPTION OF THE DRAWINGS The invention is illustrated by way ofexample in the accompanying drawings which form part of this applicationand in which:

FIG. 1 is a schematic side elevation of the machine as seen from theright side of FIG. 2;

FIG. 2 is a top plan view sectionally illustrating the structure of FIG.1;

FIG. 3 is a section taken in the plane of the line III-III of FIG. 2;

FIG. 4 is a section taken in the plane of the line IVIV of FIG. 2:

FIG. 5 is a transverse section taken in the plane of the line V-V ofFIG. 2; and

FIG. 6 is a view of the structure of FIG. 4 as seen from the left sidethereof.

DESCRIPTION OF A PREFERRED EMBODIMENT Referring now to the drawings,there is shown in FIG. 2 an elongated support shaft 10 supported notonly for swinging movement about its axis but also for axial movement.An elongated compression spring 13 is coiled about the shaft 10, in theregion of the left end thereof, and engages a split ring or the likecarried by the shaft 10 to urge the latter to the right, as viewed inFIG. 2. The left end of the shaft 10 is supported in a stationarybearing sleeve 11 which. is carried by the machine frame 12. Theopposite end of the shaft 10 is axially displaceable within a bushing 14which is itself turnable in a bearing 15 of the machine frame. A key 16that is fixed to the bushing 14 extends into an elongated axial grooveof the shaft 10 so that the latter is shiftable axially with respect tothe bushing or sleeve 14 while at the same time being con strained toturn with the sleeve 14. A lever 17 fixedly sur rounds the sleeve 14 andis connected through a ball joint with an elongated rod 18 which in turnis connected over a ball joint to a two-armed lever 19 (see also FIG.3). The latter is supported for swinging movement on a stationary pin 20which is actuated by a rotary cam 21 that is fixed to the single driveshaft S of the machine for rotation therewith. The angular position ofthe cam 21 can be adjusted by the structure shown in FIG. 3. The lever19 carries a follower roller 22 which engages the periphery of the cam21. A spring 23 is connected at one end to a stationary pin 84 carriedby the machine frame 12, and at its other end to a pin 84a carried bythe lever 19 so as to maintain the roller 22 in engagement with the cam21.

The shaft 10 carries a lifting fork 25. A pair of such lifting forks areindicated in FIG. 2 so that one lifting fork is used for adjusting asheet in one lateral direction while the other is used when a sheet isto be adjusted in the opposite lateral direction. The lifting forks 25are axially shiftable along the support shaft 10. Each lifting fork 25is of substantially U-shaped configuration and has its opposed armsformed with openings through which the shaft 10 extends. Within theenclosure formed by the shaft 10 and the U-shaped lifting forks 25 thereis a swigable body 24 surrounded by each lifting fork 25 (see FIG. 4).As is apparent from FIG. 4, the shaft 10 is formed with an elongatedaxially extending V-shaped groove which receives a fixing member 26 thatis capable of being pressed into the groove by a manually tunable screwcarried by one of the arms of each lifting fork 25, so that through thisstructure it is possible to adjustably fix each lifting fork on theshaft 10. Of course, this will also determine the position of the body24 which is freely swingable on the shaft 10.

As may be seen from FIG. 5, a spring is accommodated in a bore in thelifting fork 25 and presses downwardly against the swingable body 24 tourge the latter in a clockwise direction about the shaft 10, as viewedin FIG. 5. Each swingable body 24 carries a roller 29 which is urged bythe spring 85 against the upper surface of a sheet-conveying table 28,Each roller 29 is supported for rotary movement on a pin 30 which iseccentrically positioned with respect to the body 24 by means of anelongated member 31 fixed directly to the body 24 and having at its freeend the pin 30, most clearly shown in FIG. 6.

The swingable body 24 "is formed in its interior with a bore which hasan open bottom end to accommodate in the interior an axially shiftablecarrier member 32 the lower end of which supports for rotary movement,on a pin 35, a pressure roller 33. The latter is supported for freerotary movement by ball bearings 34 carried by the pin 35. A pair ofsprings 36 and 37 are situated within the bore of the swingable body 24and are acted upon by an adjusting screw 38 whose position can be fixedby a suitable lock nut 39 so that in this way the force with which thepressure roller 33 is urged downwardly can be adjusted.

The swingable body carries a pair of transversely extending pins 40which extend through and beyond the swingable body. As may be seen fromFIG. 5, the pins 40 actually pass through the body 32 which carries thepres sure roller 33 and then pass through cutouts formed in theswingable body 24 as well as into and through suitable cutouts formed inthe arms of the lifting forks 25. These cutouts are shown in dottedlines in FIG. 5. As a result, when the lifting fork 25 turns with theshaft 10 in a counterclockwise direction, as viewed in FIG. 5, the loweredges of these cutouts will engage the pin 40 which is at the upperlocation in FIG. 5 so as to raise the pin 40 and thus raise the entirebody 24 in all of the structure carried thereby upwardly away from theconveying table 28. On the other hand, when the lifting fork 25 isdisplaced to the position shown in FIG. 5, the lower edge portion of theopenings which engage the upper pin 40 will be displaced slightly belowthe pin 40 in the upper position of FIG. to provide clearance 90indicated in FIG. 5. At the same time the lower pin 40 also has apredetermined clearance with respect to the lifting fork, so that inthis way the pressure of the roller 29 is determined by the spring 85,and the pressure of the roller 33 is determined by the springs 36 and 37inasmuch as in this operating position there is no direct connectionbetween the lifting fork 25 and the body 24 except through the spring85.

The pins 40 serve to mount on one side of the body 24 the lateral stopmember 41, while on the other side of the body 24 the pins 40 serve tohold a guide holder 42 shown in FIG. 4. This guide holder 42 supportsthrough an adjusting mechanism a displaceable guide member 43 which issituated over the upper surface of the conveying table 28 and is formedwith an opening through which the pressure roller 33 freely extends. Theadjusting mechanism is capable of adjusting the guide member 43 so thatits distance from the upper surface of the table 2-8 corresponds to thesheet thickness. For the purpose of adjusting the guide member 43, thelatter is fixed to an upwardly extending screw threaded into anadjusting nut 44 (FIG. 4). A detent structure is formed by depressionsin the nut 44 capable of being selectively engaged by a detent ball 45urged toward the nut 44 by a spring 46. A spring 87 is coiled about athreaded rod which is fixed to and extends upwardly from the guide 43 soas to urge the latter downwardly as viewed in FIG. 4. By adjusting thenut 44 it is possible to adjust the elevation of the guide 43 withrespect to the conveying table 28.

The body 24 also carries at its left end surface, as seen in FIG. 4, astripper member 86. The lower free end of this stripper member coactswith a sheet on the table 28 to prevent the sheet from being lifted whenthe stop member 41 is lifted during upward swinging of the lifting fork25.

Each lifting fork 25 and, of course, the swingable body 24 therewith canbe coarsely adjusted on the shaft 10, axially thereof by way of the key26 and manually turnable screw 27. However, for the purpose of a fineadjustment, the frame 12 carries, as shown at the lower right portion ofFIG. 2, a sleeve 47 which is provided with an internal thread. Thesleeve 47 threadedly carries an ad justing screw 48 capable of beingturned by the knob K shown at the lower right portion of FIG. 2. Thisadjusting screw 48 carries at its left end, as viewed in FIG. 2, a ballmember 50 against which the right end of the shaft is resilientlypressed by the spring 13. A resilient sleeve 49 made of a suitablerubber or other springy elastic material frictionally surrounds and iscarried by the sleeve 47 and frictionally engages the screw 48 whichextends through an opening at the right end of the resilient sleeve orbrake 49, so that through this member 49 the adjusting screw 48 will bemaintained in its adjusted angular position. As a result of thisconstruction, it is possible to provide an extremely fine axialadjustment of the shaft 10 and the structure carried thereby, evenduring operation of the machine. The table 28 is omitted from FIG. 2 forsake of clarity.

An elongated shifting bar 60' has an upper fiat surface which is flushwith the upper flat surface of the table 28 and which is situated in anelongated slot 28' formed in the table 28 (see FIGS. 3-5). In the regionat its left end (FIG. 2), the elongated shifting bar 60 has acylindrical portion supported by ball bearings 62 in a sleeve 63 whichis carried by the machine frame 12, so that the shifting bar 60 issupported for axial shifting movement. The opposite end of the shiftingbar 60- carries a laterally extending pin 64 and bears at its extremityagainst the left end of a compression spring 68. An elongated sleeve 67is slipped onto the right end of the bar '60, as seen in FIG. 2. Thesleeve 67 is formed with a bayonet notch, such as a notch of L-shapedconfiguration, which receives the pin 64 so that the sleeve 67 isreleasably fixed to the bar 60. The spring 68 serves to maintain thebayonet connection between the pin 64 and the sleeve 67. The sleeve 67carries at its free right end, again seen in FIG. 2, a non-circularextension 69 which may be, for instance, of square cross section, sothat it is possible to turn the sleeve 67 by means of a suitable wrenchand to disconnect it from the bar 60 at the bayonet connection. Then,the sleeve 67 can be replaced through another bayonet slot on the bar 60in a position angularly displaced by 180 from the position shown in FIG.2 for a purpose described below. The sleeve 67 carries a fork 70 whichreceives a pin 71 of a fork member 72 which is swingable about asubstantially upright axis in a bearing of a suitable bracket 73- shownmost clearly in FIG. 1 and carried by the frame 12.

This swingable fork 72 carries an extension 74 which is connectedthrough a ball joint 75 with an elongated rod or link 76 which in turnis connected through a second ball joint 77 with a bell crank 78supported for swinging movement on a stationary pin 79 carried by themachine frame 12. The bell crank 78 carries at its end remote from therod 76 a cam follower roller 81 which engages the camming periphery of acam '80 capable of being adjustably mounted on and driven by the singledrive shaft of the machine by the adjusting structure shown in FIG. 1.Thus, the drive shaft which is sectionally illustrated at the lowerright portion of FIG. 3 is also operatively connected with the cam torotate the latter simultaneously with the cam 21.

The structure described above operates as follows:

The axial displacement of the shifting bar 60 is brought about byswinging the swingable fork 72, the angular dis placement of which isbrought about by the link 7-6 and the bell crank 78 in coaction with thecam 80'. The latter train of elements forms a transmission providing thestructure with a shifting means driven by the single drive shaft toaxially shift the shifting bar 60. With the structure illustrated, thebar 60 will be shifted in one direction so as to shift a sheet againstone of the stop members 41. By way of the removal of the sleeve 67 atits bayonet connection, the fork 70 can be displaced through from itsposition shown in FIG. 1 so that it will coact with the other pin 71 ofthe swingable fork 72, and in this way the shifting means will coactwith the bar 60 to shift the latter in an opposite direction when it isdesired to laterally adjust a sheet with respect to the stop member 41carried by the other body 24 of the other lifting fork 25. The structureST in FIG. 1 represents the manually operable axially adjusting means47-50 described above with respect toFIG. 2. It will be noted that thepin 64 carries on a suitable ball bearing a roller 65 guided in astationary guide member 66, the elements 65 and 66 being shown in thelower right portion of FIG. 2 as well on the left side of FIG. 1.

Simultaneously with the actuation of the shifting bar 60 by means of theshifting means just described, the turning means formed by the cam 21together with the lever 19 and the transmission from the latter to thelever 17 serves to swing the shaft 10 about its axis, thus providingfrom the same drive shaft a means for rotating the shaft 10 about itsaxis in timed relation with the shifting of the bar 60 by properadjustment of the cams 21 and 80 with respect to each other about theircommon axis. The swinging of the shaft 10 will result in turning of thelifting fork 25 downwardly therewith, and the displaceable member 32within the swingable body 24 is acted upon by the springs 36 and 37 sothat the roller 33 extends through the opening of the guide member 43 topress against the upper surface of the shifting bar 60.

The paper is thus pressed at its upper surface against the roller 33 andat its lower surface against the bar 60 so that when the latter shiftsthe paper will be laterally moved into engagement with the lateral stopmember 41. When the paper engages the stop member 41 it stops moving butthe bar 60 can continue to slide beneath the paper. this possibility isbrought about by very precisely regulating the pressure of the roller 33through the spring 36 and 37 by way of the adjusting screw 38. As waspointed out hereinbefore, when the roller 33 presses against the paperthe clearance 90 is provided. The stripper 86 on the swingable body 24provides together with the upper surface of the table 28 a gap throughwhich the paper sheets can freely pass. When the lateral stop 41 islifted, the sheet is retained by the lower surface of the stripper 86 sothat the sheet cannot move up with the stop member.

Once the paper sheet is adjusted it is advanced by a nonillustrateddrive toward the location where the printing operations take place. Theshifting bar 60 returns to its initial position. A new sheet is suppliedand the above cycle is repeated.

The adjusting screw 48, referred to above, enables the axial position ofthe entire shaft to be very precisely adjusted, even during theoperation of the machine, so that the lateral movement of a sheet canalso be precisely adjusted. When the size of the paper sheets ischanged, then a coarse adjustment can be brought about by way of thescrew 27, as has been pointed out, and then the fine adjustment can beprovided by way of the screw 48.

FIG. 1 shows in dotted lines, and FIG. 3 in relatively thin lines, thecylinders of the printing press which is of the offset type. As isindicated by the double-headed arrow for the lower cylinder, shown indotted lines in FIG. 1 and in a thin full line in FIG. 3, the swingablegripper carries out a rotary reciprocating motion, and the circle withthe double-headed arrow represents the mechanism of the rotaryswing-grippers. FIG. 1 shows in a straight dotted line T extendingtangentially from the bottom of the swingable gripping assembly thelocation of the transporting or conveying table 28. The device D shownin dotted lines at the lower part of the lower dotted circle in FIG. 1shows the position of the front mark of the gripping mechanism of therotary swing gripper.

As was pointed out, each of the lateral stops 41 extends into a grooveof the conveying table 28. Thus, the table 28 is formed with an axiallyextending groove of sufficient width to receive freely the lower end ofthe stop member 41. In this way, any impact between the stop member andthe conveying table 28 is avoided while at the same time the stop member41 extends to an elevation low enough to reliably engage each sheet atits side edge without permitting the sheet to become wedged between thebottom edge of the stop 41 and the table 28. During each revolution whena cycle takes place the lateral stops 41 are raised out of the groove ofthe table 28, as soon as the follower roller 22 is engaged by the partof the cam 21 which is situated at the greatest radial distance from thedrive shaft.

It is to be noted that the pin 30 which carries the roller 29 is aneccentric pin that can be angularly adjusted so as to provide throughthe member 41 an adjustment of the body 24 to reliably seat the roller33 across its entire width on the shifting bar 60.

When relatively light paper is printed, the spring 37 only will beprovided within the body 24 to urge the roller downwardly. Both of thesprings 36 and 37 are used when the printing of heavier paper requires alarger force at the roller 33. Of course, when the lifting fork turnsupwardly the clearance 90 is eliminated, and through the pin 40 theentire body 24 is raised with the lifting fork 25. Since the lateralstop 41 is fixed by the pin 40 to the body 24, this lateral stop 41 willalso be raised out of the groove of the table 28.

I claim:

1. In a machine for handling sheets, such as a printing machine, anelongated support shaft, support means supporting said shaft for rotarymovement, a lifting fork carried by said support shaft for swingingmovement when the latter turns, a swingable body freely swingable onsaid support shaft and coacting with said lifting fork to be raised bythe latter when said support shaft turns in one direction, saidswingable body being lowered when said shaft turns in an oppositedirection, spring means between said lifting fork and swingable body forurging the latter in a given direction with respect to said liftingfork, a sheet-conveying table situated beneath said support shaft andswingable body, a roller turnably carried by said swingable body andurged by said spring means into engagement with said conveying table, astop member carried by said swingable body for engaging a side edge of asheet, a sheet-engaging shifting bar having an upper surface flush withan upper surface of said table which engages a sheet, a pressure rollercarried by said swingable body for pressing a sheet against saidshifting bar, shifting means coacting with said bar for shifting thelatter parallel to said support shaft for displacing a sheet betweensaid pressure roller and bar into engagement with said stop member,swinging means operatively connected to said support shaft for swingingthe latter about its axis, and a single drive shaft operativelyconnected to said shifting means for actuating the latter to shift saidbar and operatively connected to said swinging means for actuating thelatter to swing said support shaft.

2. The combination of claim 1 and wherein said s'hifting means includesa cam-actuated transmission operatively connected to a swingable fork,and a fork member carried by said bar and engaging said swingable forkto be shifted when the latter swings.

3. The combination of claim 2 and wherein said fork of said bar isoperatively connected to the latter through a spring-loaded bayonetjoint.

4. The combination of claim 1 and wherein said swingable body carries astripper plate situated over said conveying table, and said body beingformed with a bore in which is located a carrier which supports andcarries said pressure roller, a guide member carried by said swingablebody over said conveying table and formed with an opening through whichsaid pressure roller extends, and spring means in said bore of said bodyengaging said carrier to urge said pressure roller toward and intoengagement with said shifting bar.

5. The combination of claim 4 and wherein a pin extends through and iscarried by said swingable body, said pin carrying said stop member andalso carrying a holder, and adjusting means carried by said holder andsupporting said guide member for adjustable movement with respect tosaid conveying table.

6. The combination of claim 1 and wherein a rotary adjusting screwengages one end of said support shaft, said support means supporting thelatter shaft not only for swinging movement about its axis but also forlongitudinal adjusting movement, and a spring urging said shaft intoengagement with said adjusting screw so that by turning the latter theaxial position of said shaft and said lifting fork and swingable bodycarried thereby can be adjusted.

7. The combination of claim 2 and wherein a pair of cams are connectedto said single drive shaft to be rotated thereby, a pair of cam-followerlevers supported for swinging movement and engaging said pair of cams,and a pair of transmissions extending between the latter levers and saidswingable support shaft on the one hand and said swingable fork, on theother hand.

8. The combination of claim 1 and wherein said conveying table is formedwith a longitudinal slot extending parallel to said swingable shaft, andsaid shifting bar extending through said slot of said table and havingan upper surface flush with the upper surface of said table.

9. The combination of claim 1 and wherein said table axially, toprecisely determine the position of said swing is formed with a groovewhich receives a lower end of able y along the axis of Said PP Shaftsaidstop member, the latter being lifted out of said R f Ct d groove uponlifting of said swingable body by said lifte erences l e ing fork whenthe latter turns with said support shaft. 5 UNITED S S PATENTS 10. Thecombination of claim 1 and wherein a coarse 2 730 3 2 1 195 h 71adjusting means adjustably fixes said lifting fork to said 2,953,372 9/1960 Williams et al 27'1-52 support shaft so as to also determine thelocation of said swingable body, and wherein a fine adjusting means co-ROBERT SHERIDAN, Pnmafy Examlner acts with said support shaft for finelyadjusting the latter 10 R J. $PAR Assistant Examiner

